Technology applied to air conditioners to protect the ozone layer


In commemoration of the Montreal Protocol, in 1994 the United Nations Normal Meeting proclaimed September 16 the worldwide day for the preservation of the ozone layer.

American scientists have proven that the ozone layer is recovering and has generated modifications within the air circulation patterns of the southern hemisphere, one thing that have to be thanked for the Montreal Protocol, which on September 16, 1987 agreed, amongst different measures, to ban using gases that used CFC compounds.

Within the examine, revealed within the scientific journal ‘Nature’, the researchers level out that the Montreal Protocol “has not solely stimulated the therapeutic of the ozone layer, it has additionally stimulated the current modifications noticed within the air circulation patterns of the southern hemisphere ”. That is probably the most profitable worldwide settlement thus far, as all of the timetables for the phase-out of those substances have been met, even forward of schedule in lots of instances.

Nevertheless, there was a previous to that prohibition. CFC compounds, involved with ultraviolet mild, dissociate releasing chlorine radicals that react with ozone molecules, breaking them down. This phenomenon was inflicting a big gap within the nice protecting barrier of the Earth, permitting ultraviolet radiation dangerous to folks to achieve the Earth’s floor. Because of the Montreal protocol, ozone ranges are already recovering.

With zero unfavorable influence on the ozone layer, low Atmospheric Warming Potential (GWP), simple to recycle and reuse and a low flammability degree, R32 refrigerant gasoline continues to be the most suitable choice when buying an air con product. “Daikin launched the primary R-32 refrigerant air con models globally in Japan in late 2012, the place thousands and thousands of models have already been put in since then.

Subsequently, the fashions with R-32 have introduced thermal consolation to different nations comparable to Australia, New Zealand, India, Thailand, Vietnam, the Philippines, Malaysia or Indonesia. In 2013, fashions with R-32 made their look in Europe and lately in Latin America, including higher environmental advantages to Daikin model merchandise, ”says Milena Santos, Daikin’s director of strategic advertising and unit product.

Daikin was the primary firm to find that utilizing R-32 in its pure kind moderately than utilizing it as a part of a mix had a number of benefits. The chemical title for R-32 is difluoromethane. It’s a refrigerant that has been used for a few years as a part of the R-410A refrigerant combination (50% R-32 and 50% R-125). “A elementary facet of Daikin’s company philosophy is to try to paved the way in creating environmentally pleasant merchandise, with power effectivity and refrigerant selection being a very powerful components,” he provides.

World warming potential (GWP)

The GWP is a quantity that expresses the potential influence {that a} given refrigerant would have on world warming if it had been launched into the environment. It’s a relative worth that compares the influence of 1 kg of refrigerant with 1 kg of CO2 over a interval of 100 years.

Though this influence might be prevented by stopping leaks and making certain correct end-of-life recycling, selecting a refrigerant with decrease GWP and minimizing the quantity of refrigerant will cut back the environmental danger if a leak happens unintentionally.

Ozone Destruction Potential (ODP)

Ozone depletion potential is a quantity that refers back to the damaging influence a chemical has on the stratospheric ozone layer. It’s a relative worth that compares the influence of 1 kg of refrigerant with the same mass of R-11. Subsequently, the ODP of R-11 is 1.

The ozone layer recovers at completely different charges in numerous components of the environment. For instance, the ozone layer is anticipated to get well to 1980s ranges for the northern mid-latitudes across the 2030s and for the southern mid-latitudes within the 2050s.

The Antarctic ozone gap is prone to get well considerably later, within the 2060s. Nevertheless, this restoration could also be reversed as the degrees of carbon dioxide (CO2), which trigger the greenhouse impact, proceed to rise and put all this progress in danger.